Palladium Complexes of 2-Pyridin-2-yl Substituted 1,3-Bis(diphenylphosphino)propane: Highly Active Catalysts for the Room-Temperature Copolymerization of Carbon Monoxide with Ethene
作者:Simon Doherty、Edward G. Robins、Mark Nieuwenhuyzen、Paul A. Champkin、William Clegg
DOI:10.1021/om020301c
日期:2002.9.1
corresponding palladium complexes [(P−P)PdCl2] (2a−c), [(P−P)Pd(OAc)2] (3a−c), [2-methyl-2-pyridin-2-yl-1,3-bis(diphenylphosphino)propane}PdClMe] (4a), and [(S)-(+)-N,N-dimethyl-α-methylbenzylamine-C,N}Pd2-MeOCH2CMe(CH2PPh2)2}][ClO4] (5b) have been prepared and characterized. Palladium(II) complexes of 2-methyl-2-pyridin-2-yl-1,3-bis(diphenylphosphino)propane (1a) are highly active for the room-temperature
2,2'-二取代的1,3-双(二苯基膦基)丙烷衍生物[XC(Me)(CH 2 PPh 2)2 ](X = 2-py,1a ; X = CH 2 OMe,1b ; X = Ph ,1c)及其相应的钯配合物[(P-P)PdCl 2 ](2a - c),[(P-P)Pd(OAc)2 ](3a - c),[2-甲基-2-吡啶-2-基-1,3-双(二苯基膦基)丙烷} PdClMe](4a)和[(S)-(+)- N,N-二甲基-α-甲基苄胺-C,N} Pd 2- MeOCH 2 CMe(CH 2已经制备并表征了PPh 2)2 }] [ClO 4 ](5b)。2-甲基-2-吡啶-2-基-1,3-双(二苯基膦基)丙烷(1a)的钯(II)络合物对乙烯和一氧化碳的室温共聚反应具有很高的活性,在我们的条件下,明显比基于1,3-双(二苯基膦基)丙烷(dppp),1b和1c的系统更具活性。由dppp,1b和1